  // util.js
  const formatTime = date => {
    // const date = new Date()
    const year = date.getFullYear()
    const month = date.getMonth() + 1
    const day = date.getDate()
    const hour = date.getHours()
    const minute = date.getMinutes()
    const second = date.getSeconds()
   
   return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute].map(formatNumber).join(':')   //返回年月日，时分秒
 }
  
 const formatNumber = n => {
   n = n.toString()
   return n[1] ? n : '0' + n
 }
  
 module.exports = {
   formatTime: formatTime
 }